1.114 2018-03-09
- optionally have default SPF record which gets used for sites which don't
  specify their own. Since this affects often smaller sites something like
  'mx ~all' or 'mx/24 ~all' is useful.

1.113 2016-05-17
- fix bug in generating the Received-SPF header, introduced in 1.112
- samples/spf-lookup.pl has now option to specify DNS server

1.112 2015-12-16
- optimize debugging and make it usable from outsite (for
  Mail::DMARC::Iterator).
- method todo() to get a list of open DNS queries
- hash in result contains all the information which are also contained in
  the Received-SPF header, i.e. also client-ip, envelope-from...

1.111 2015-11-15
- adapt tests to recent changes in Net::DNS (use of undocumented function
  stopped working). RT#108914. Thanks to SREZIC

1.11 2012-06-02
- adapt to changed behavior in newer Net::DNS versions regarding
  encoding of special characters like spaces. Nothing changed for
  normal DNS names, only for the sometimes esoteric rfc4408 test suite

1.10 2011-08-30
- return ('') also if TXT was NXDOMAIN but SPF query is still open etc

1.09 2011-08-29
- let next() report ('') if given packet matched query, but got
  ignored or () if packet did not match any query, instead of 
  reporting () in both cases

1.08 2009-09-08
- fixed case where problem part in SPF-Received Header contained
  newlines

1.07 2009-08-31
- fix for SPF with multiple includes on same level where not the 
  first matches

1.06 2009-02-06
- fix for DNS names with spaces and Net::DNS <0.64 (for SPF test 
  suite, should be irrelevant for real life DNS names)

1.05_01 2009-02-02
- add test when ptr record results in cname which then results in
  another ptr record
1.05 2009-01-19
- work around changes between Net::DNS 0.63 and 0.64

1.04 2009-01-19
- fix bug in mailheader for empty or invalid SPF records

1.03 2008-12-07
- more useful debugging messages
- switch on debugging via use/import
- can set own debug function via use/import

1.02 2008-11-26
- document all fields in module
- report identity=helo in Received-SPF if helo, not mailfrom, is used
- fix and document regex in _check_macro_domain

1.01 2008-11-26
- lots of code cleanups to make it better maintainable
- detect and fix bug with deeply nested includes, where a Match
  (Pass) from a lower level gets directly propagated to the top
- detect and fix bugs, where final result (errors) where not
  saved in $self->{result}
- better SenderID support, some tests for SenderID records
- no more cbid in next(), instead track DNS header ids of send 
  DNS packets and make sure that reply matches id of query
- set minimal version for Net::DNS to 0.62 , older versions have 
  problems with SPF
- more tests

1.00 2008-11-25
- declare all $self as Mail::SPF::Iterator object
- add method to get/set default explanation string
- call it feature complete -> set version to 1.0

0.10 2008-11-24
- license clarification for SPF test suite in COPYRIGHT and add
  t/rfc4408-tests.LICENSE to distribution
- documentation update
- samples/spflookup shows explanation on Fail

0.09 2008-11-24
- internal restructuring, better checking that DNS answers match
  the question
- expansion of %{p} in exp= modifier
- more tests outside of official SPF test suite

0.08 2008-11-22
- accepts also SenderID records (only spf2.0/mfrom or 
  spf2.0/pra,mfrom or spf2.0/mfrom,pra) and handle them like 
  v=spf1 records. Prefer "real" SPF records

0.07 2008-11-22
- %{p} macro gets now expanded in TXT for explain (but still not in
  exp=..%{p}.. modifiers)
- method result to get result (before next gives the final result,
  in case one don't want to lookup %{p} in explain)
- method mailheader doesn't take arguments anymore, because result
  gets stored in the object

0.06 2008-11-21
- exp method works for most cases, except when it contains %{p} macro
  which in most cases will be replaced with 'unknown'
- fix for interpretation of %{i} for IP6
- better debugging
- script samples/spflookup.pl which does lookup from the command line
  and returns SPF-Received header

0.05 2008-11-20
- sub mailheader which gives SPF-Received header
- sub lookup_blocking for simple blocking lookup (for convinience)
- clean up 'problem' messages, returns mechanism which matcht
- better debugging

0.04 2008-11-20
- do not depend on additional DNS RR for resolving CNAME and finding 
  address for MX but still use them if found
  test suite expanded to test with and w/o additional RR
- do not depend on YAML for executing SPF test suite. The YAML file
  is converted to perl file (with Data::Dumper) which is used instead
  of the YAML file

0.03 2008-11-19
- fixes for Socket6 detection
- fixes for test suite
- fixes for cases, where DNS name contains special chars (qname from
  Net::DNS::Question returns presentation format, not wire format, if
  it got the data from the wire)

0.02 2008-11-17
- specify URI as prereq
- if YAML is not installed show why test suite got skipped
- skip parts of test suite of Socket6 not installed

0.01 2008-11-13
- first release which passes SPF test suite